EP1984919A1 - Synchron-servo-kanal zur longitudinalpositionsdetektion und positionsfehlersignalerzeugung in bandlaufwerksystemen - Google Patents

Synchron-servo-kanal zur longitudinalpositionsdetektion und positionsfehlersignalerzeugung in bandlaufwerksystemen

Info

Publication number
EP1984919A1
EP1984919A1 EP07703759A EP07703759A EP1984919A1 EP 1984919 A1 EP1984919 A1 EP 1984919A1 EP 07703759 A EP07703759 A EP 07703759A EP 07703759 A EP07703759 A EP 07703759A EP 1984919 A1 EP1984919 A1 EP 1984919A1
Authority
EP
European Patent Office
Prior art keywords
servo
lpos
tape
signal
velocity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07703759A
Other languages
English (en)
French (fr)
Other versions
EP1984919B1 (de
Inventor
Giovanni Cherubini
Evangelos Eleftheriou
Jens Jelitto
Robert Hutchins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP1984919A1 publication Critical patent/EP1984919A1/de
Application granted granted Critical
Publication of EP1984919B1 publication Critical patent/EP1984919B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Control Of Position Or Direction (AREA)
EP07703759A 2006-01-26 2007-01-10 Synchron-servo-kanal zur longitudinalpositionsdetektion und positionsfehlersignalerzeugung in bandlaufwerksystemen Active EP1984919B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/340,030 US7245450B1 (en) 2006-01-26 2006-01-26 Synchronous servo channel for longitudinal position detection and position error signal generation in tape drive systems
PCT/EP2007/050212 WO2007085529A1 (en) 2006-01-26 2007-01-10 Synchronous servo channel for longitudinal position detection and position error signal generation in tape drive systems

Publications (2)

Publication Number Publication Date
EP1984919A1 true EP1984919A1 (de) 2008-10-29
EP1984919B1 EP1984919B1 (de) 2009-08-05

Family

ID=37964627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07703759A Active EP1984919B1 (de) 2006-01-26 2007-01-10 Synchron-servo-kanal zur longitudinalpositionsdetektion und positionsfehlersignalerzeugung in bandlaufwerksystemen

Country Status (9)

Country Link
US (1) US7245450B1 (de)
EP (1) EP1984919B1 (de)
JP (1) JP5004969B2 (de)
KR (1) KR100968177B1 (de)
CN (1) CN101361125B (de)
AT (1) ATE438912T1 (de)
CA (1) CA2636848C (de)
DE (1) DE602007001872D1 (de)
WO (1) WO2007085529A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
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US8331055B2 (en) 2009-07-09 2012-12-11 International Business Machines Corporation Control method and apparatus for a dual-channel weighted LPOS combining scheme

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US7433142B2 (en) * 2006-02-01 2008-10-07 International Business Machines Corporation Using at least one servo channel to provide timing recovery and timing information to data channels
US7436621B2 (en) * 2006-06-08 2008-10-14 Quantum Corporation Azimuth compensation using combination bump pes detection
US7411531B2 (en) * 2006-06-30 2008-08-12 Agere Systems Inc. Methods and apparatus for asynchronous sampling of a received signal at a downsampled rate
US7365929B2 (en) * 2006-07-30 2008-04-29 International Business Machines Corporation Synchronous servo channel for tape drive systems
US7742254B2 (en) * 2008-01-03 2010-06-22 International Business Machines Corporation Servo channel for tape drive systems
US7605992B2 (en) * 2008-01-28 2009-10-20 International Business Machines Corporation Robust LPOS detection with predictor and bit verifier
US7990644B2 (en) * 2008-02-29 2011-08-02 International Business Machines Corporation Apparatus and method to decode linear position information encoded in a sequential information storage medium
US8271857B2 (en) * 2008-05-13 2012-09-18 International Business Machines Corporation Correcting errors in longitudinal position (LPOS) words
US8488267B2 (en) * 2008-06-06 2013-07-16 Hewlett-Packard Development Company, L.P. Sensor position adjustment with media velocity relative sample timing
CN102027538B (zh) * 2008-06-18 2013-01-02 国际商业机器公司 带驱动器中的伺服读取信号的字同步化
US20100079890A1 (en) * 2008-09-26 2010-04-01 Brummet Robert Allan Method and apparatus for encoding positioning information on a magnetic tape media
US8059361B2 (en) * 2009-01-12 2011-11-15 Hewlett-Packard Development Company, L.P. Position signal processor
US8054575B2 (en) * 2009-01-12 2011-11-08 Hewlett-Packard Development Company, L.P. Position signal processor
US8159770B2 (en) * 2009-01-13 2012-04-17 International Business Machines Corporation Apparatus and method to transfer data to and from a sequential information storage medium
US8169736B2 (en) 2009-07-17 2012-05-01 International Business Machines Corporation Method and apparatus to position a head module comprising servo elements and a plurality of data elements
US8054569B2 (en) * 2009-07-17 2011-11-08 International Business Machines Corporation Method and apparatus to identify a data band encoded between two servo bands in a sequential information storage medium
US8094407B2 (en) * 2009-08-18 2012-01-10 International Business Machines Corporation Servomechanism with adjustable predictor filter
US8139312B2 (en) 2010-03-02 2012-03-20 International Business Machines Corporation Timing alternative intervals within a timing based servo band
US7957088B1 (en) 2010-03-02 2011-06-07 International Business Machines Corporation Track compensation and skew compensation for drives having flangeless rollers and systems thereof
US8422162B2 (en) * 2010-07-16 2013-04-16 International Business Machines Corporation Determining a reference waveform used by a correlator in a servo channel
US8223057B2 (en) * 2010-09-30 2012-07-17 Schneider Electric USA, Inc. Quantizing sampled inputs using fixed frequency analog to digital conversions through interpolation
US8576510B2 (en) 2011-10-06 2013-11-05 International Business Machines Corporation Robust metric computation of longitudinal position (LPOS) data symbol detection
US9564168B2 (en) 2015-04-07 2017-02-07 International Business Machines Corporation Adjustable interpolation sampling interval for tape systems
JP6491170B2 (ja) 2016-11-29 2019-03-27 Ｎｅｃプラットフォームズ株式会社 制動装置
US10141016B2 (en) 2017-02-22 2018-11-27 International Business Machines Corporation Balanced delay and resolution for timing based servo systems
US10102873B2 (en) 2017-02-22 2018-10-16 International Business Machines Corporation Balanced delay and resolution for high density servo systems
US10586564B1 (en) * 2019-01-23 2020-03-10 International Business Machines Corporation Safe head positioning based on y-position values in tape drive
US11488626B2 (en) 2020-10-01 2022-11-01 Western Digital Technologies, Inc. Data storage device demodulating servo stripes using matched filter
US11386928B2 (en) * 2020-10-01 2022-07-12 Western Digital Technologies, Inc. Data storage device demodulating servo stripes using matched filter
US11488625B2 (en) 2020-10-01 2022-11-01 Western Digital Technologies, Inc. Data storage device demodulating servo stripes using matched filter

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US5726818A (en) * 1995-12-05 1998-03-10 Cirrus Logic, Inc. Magnetic disk sampled amplitude read channel employing interpolated timing recovery for synchronous detection of embedded servo data
US6125154A (en) * 1998-03-27 2000-09-26 Marvell Technology Group Digital servo channel for recording apparatus
US6532128B1 (en) * 1999-05-19 2003-03-11 International Business Machines Corporation Data set to recording media registration and synchronization
US6239939B1 (en) * 1999-08-09 2001-05-29 International Business Machines Corporation Robust detection of data modulated into a timing based servo
US6329942B1 (en) * 2000-01-31 2001-12-11 Texas Instruments Incorporated Parallel latch for high speed comparator using two modes of operation
US6791781B2 (en) * 2001-07-17 2004-09-14 International Business Machines Corporation Method and apparatus for providing linear position (LPOS) estimations
JP4042961B2 (ja) * 2002-08-27 2008-02-06 富士フイルム株式会社 記録媒体カートリッジおよびその記録再生装置
US6937413B2 (en) * 2003-08-08 2005-08-30 International Business Machines Corporation Tape servo information with superimposed data information providing servo band identification

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8331055B2 (en) 2009-07-09 2012-12-11 International Business Machines Corporation Control method and apparatus for a dual-channel weighted LPOS combining scheme

Also Published As

Publication number Publication date
CA2636848C (en) 2015-04-28
EP1984919B1 (de) 2009-08-05
CN101361125B (zh) 2011-01-12
DE602007001872D1 (de) 2009-09-17
ATE438912T1 (de) 2009-08-15
JP5004969B2 (ja) 2012-08-22
KR100968177B1 (ko) 2010-07-07
US7245450B1 (en) 2007-07-17
CA2636848A1 (en) 2007-08-02
WO2007085529A1 (en) 2007-08-02
CN101361125A (zh) 2009-02-04
JP2009524897A (ja) 2009-07-02
US20070171565A1 (en) 2007-07-26
KR20080089599A (ko) 2008-10-07

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